Hg2(NO3)2 + Na2CO3 = NaNO3 + HgCO3 balance this

Why are the trends and exceptions to the trends in ionization energy observed?

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

Enzymes affect the reactions in living cells by changing the